Telephone Wall Mounting - Toshiba strata CT Installation & Maintenance Manual

Electronic Telephones
Standard Telephones
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Telephone Wall Mounting

Strata CT I&M Manual October 2000
The following provides information on how to connect electronic telephones to the Strata CT
system.
Note
Before proceeding, see warning and caution notes in
Page 5-3.
Electronic telephones are connected to electronic telephone circuits in the CT System on the
Electronic Telephone Interface Unit (PEKU) via the MDF with standard twisted-pair jacketed
telephone cable. Two-pair wiring, as a minimum, is required for telephone connection.
However, three-pair wiring is recommended for some upgrades, such as OCA.
To accommodate the electronic telephone line cord, the cable should be terminated in a
BS6312 modular connector which then plugs into a slave LJU at the station location. The
standard two-pair modular electronic telephone cord length is 3 metres (the maximum
allowed length is 10 metres). See
The following provides information on how to connect standard telephones to the CT system.
Note Before proceeding, see warning and caution notes in
Page 5-3.
Standard telephones connect to standard telephone circuits of the Standard Telephone
Interface PCBs: RSTU and PSTU. Standard telephones connect to RSTU or PSTU via the
MDF with standard twisted-pair jacketed telephone cable. (See single-pair wiring
– Universal Slot PCB Wiring
The standard telephone cable's overall loop resistance, connected on- or off-premises, is 300
ohms maximum, (for PSTU), 600 ohms for RSTU with -24VDC (no R48S), and 1200 ohms
for RSTU with -48VDC (R48S installed on RSTU PCB), including the telephone resistance.
This also applies to all devices connected to standard telephone circuits.
This section explains how to mount digital and electronic telephones to a wall or other
vertical surface. See the manufacturer's documentation for instructions on mounting standard
phones.
Notes
Digital telephones equipped with PCIUS cannot be wall mounted.
G
Electronic and older digital telephones equipped with an HHEU1 can be wall mounted.
G
2000 & 2500-series digital telephones with headsets can only be wall mounted with an
HHEU2.
Chapter 4 – Universal Slot PCB Wiring
for more details.)
Station Apparatus
"Telephone Installation" on
for more details.
"Telephone Installation" on
Chapter 4
5-5